The Janus Run

When Coleman Lang finds his girlfriend Gina dead in his New York City apartment, he thinks nothing could be worse... until he becomes the prime suspect.
Desperate to uncover the truth and clear his name, Coleman hits the streets. But there's a deranged Italian hitman, an intuitive cop, two US Marshals, and his ex-wife all on his tail. And trying to piece together Gina's murky past without dredging up his own seems impossible. Worse, the closer he gets to Gina's killer, the harder it is to evade the clutches of the mysterious organisation known only as Janus – from which he'd long since believed himself free.